OpenAI just updated its most important product. And no, it’s not ChatGPT

More than three million developers are using OpenAI’s APIs as shorthand code to infuse apps and websites with an engine of advanced AI. And today, the company’s most popular API, called Chat Completions, is getting a significant sequel called Responses. Eight months in development, it will vastly expand upon and simplify the experience of plugging into OpenAI. For developers, Responses will mean using less code to stack more complex questions to the AI. A hundred lines of code will...